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20. What should be done to these equations in order to solve a system of equations by elimination?

[tex][tex]\[
\left\{
\begin{array}{c}
-3x + 2y = 16 \\
2x + 5y = 21
\end{array}
\right.
\][/tex][/tex]

A. Multiply the first equation by 3.
B. Multiply the first equation by 3 and the second equation by 2.
C. Multiply the first equation by 2 and the second equation by 3.
D. Nothing needs to be done, since they both have 2's and 3's for coefficients.

20 What Should Be Done To These Equations In Order To Solve A System Of Equations By Eliminationtextex Left Beginarrayc 3x 2y 16 2x 5y 21 Endarray Right TextexA class=

Sagot :

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